/usr/share/ncarg/hluex/ngmath/nm04f.f is in libncarg-data 6.4.0-9.
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C $Id: nm04f.f,v 1.8 2010-03-15 22:49:24 haley Exp $
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C C
C Copyright (C) 1997 C
C University Corporation for Atmospheric Research C
C All Rights Reserved C
C C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C File: nm04f.f
C
C Author: Mary Haley (taken from one of Fred Clare's examples)
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C Date: Mon Dec 22 13:53:37 MST 1997
C
C Description: Simple 3D interpolation.
C
external NhlFAppClass
external NhlFNcgmWorkstationClass
external NhlFPSWorkstationClass
external NhlFPDFWorkstationClass
external NhlFCairoPSPDFWorkstationClass
external NhlFCairoImageWorkstationClass
external NhlFCairoWindowWorkstationClass
parameter(NUM=1000,NX=21,NY=21,NZ=21)
real xi(NUM), yi(NUM), zi(NUM), u(NUM)
real xo(NX), yo(NY), zo(NZ), output(NX,NY,NZ)
real xmin,ymin,zmin,xmax,ymax,zmax
data xmin,ymin,zmin,xmax,ymax,zmax / -2., -2., -2., 2., 2., 2./
integer ier
integer appid,wid,gkswid
integer srlist, grlist
integer i
character*7 wks_type
C
C Default is to display output to an NCGM workstation.
C
wks_type = "ncgm"
C
C Initialize the high level utility library
C
call NhlFInitialize
C
C Create an application context. Set the app dir to the current directory
C so the application looks for a resource file in the working directory.
C In this example the resource file supplies the plot title only.
C
call NhlFRLCreate(srlist,'setrl')
call NhlFRLCreate(grlist,'getrl')
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'appDefaultParent','True',ierr)
call NhlFRLSetString(srlist,'appUsrDir','./',ierr)
call NhlFCreate(appid,'nm04',NhlFAppClass,0,srlist,ierr)
if (wks_type.eq."ncgm".or.wks_type.eq."NCGM") then
C
C Create an NCGM workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkMetaName','./nm04f.ncgm',ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFNcgmWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."x11".or.wks_type.eq."X11") then
C
C Create an X11 workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkPause','True',ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFCairoWindowWorkstationClass,
+ 0,srlist,ierr)
else if (wks_type.eq."oldps".or.wks_type.eq."OLDPS") then
C
C Create an older-style PostScript workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkPSFileName','./nm04f.ps',ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFPSWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."oldpdf".or.wks_type.eq."OLDPDF") then
C
C Create an older-style PDF workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkPDFFileName','./nm04f.pdf',ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFPDFWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."pdf".or.wks_type.eq."PDF".or.
+ wks_type.eq."ps".or.wks_type.eq."PS") then
C
C Create a cairo PS/PDF workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkFileName','./nm04f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFCairoPSPDFWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."png".or.wks_type.eq."PNG") then
C
C Create a cairo PNG workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkFileName','./nm04f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'nm04Work',
+ NhlFCairoImageWorkstationClass,0,srlist,ierr)
endif
do 10 i=1,NUM
xi(i) = xmin+(xmax-xmin)*drnm1()
yi(i) = ymin+(ymax-ymin)*drnm1()
zi(i) = zmin+(zmax-zmin)*drnm1()
u(i) = xi(i)**2 + yi(i)**2 + zi(i)**2
10 continue
C
C Create the output grid.
C
do 102 i=1,NX
xo(i) = xmin+(real(i-1)/real(NX-1))*(xmax-xmin)
102 continue
do 103 j =1,NY
yo(j)= ymin+(real(j-1)/real(NY-1))*(ymax-ymin)
103 continue
do 104 k=1,NZ
zo(k) = zmin+(real(k-1)/real(NZ-1))*(zmax-zmin)
104 continue
C
C Interpolate.
C
call dsgrid3s(num,xi,yi,zi,u,NX,NY,NZ,xo,yo,zo,output,ier)
C
C Get Workstation ID.
C
call NhlFRLClear(grlist)
call NhlFRLGetInteger(grlist,'wkGksWorkId',gkswid,ierr)
call NhlFGetValues(wid,grlist,ierr)
C
C There's no HLU object for surface plots yet, so we need to call the
C LLUs to get a surface plot.
C
call gacwk (gkswid)
call tdez3d(NX,NY,NZ,xo,yo,zo,output,3.0,2.,-35.,65.,6)
call gdawk (gkswid)
call NhlFFrame(wid,ierr)
C
C NhlDestroy destroys the given id and all of its children.
C
call NhlFDestroy(wid,ierr)
C
C Restores state.
C
call NhlFClose
stop
end
REAL FUNCTION DRNM1()
C
C Portable random number generator.
C
PARAMETER (MPLIER=16807,MODLUS=2147483647,MOBYMP=127773,
+ MOMDMP=2836)
C
INTEGER HVLUE, LVLUE, TESTV, NEXTN
SAVE NEXTN
DATA JSEED,IFRST/123456789,0/
C
IF (IFRST .EQ. 0) THEN
NEXTN = JSEED
IFRST = 1
ENDIF
C
HVLUE = NEXTN / MOBYMP
LVLUE = MOD(NEXTN, MOBYMP)
TESTV = MPLIER*LVLUE - MOMDMP*HVLUE
IF (TESTV .GT. 0) THEN
NEXTN = TESTV
ELSE
NEXTN = TESTV + MODLUS
ENDIF
DRNM1 = REAL(NEXTN)/REAL(MODLUS)
C
RETURN
END
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